Question

Найдите  корень  уравнения
(1/3)х^2=16(1/3)

Answer 1

$frac{1}{3}x^2=16frac{1}{3}\\frac{1}{3}x^2=frac{49}{3}\\x^2=frac{49}{3}:frac{1}{3}\\x^2=frac{49*3}{3*1}\\x^2=49\\x_1=sqrt{49}\x_2=-sqrt{49}\\x_1=7\x_2=-7$